Receptacle-closure cap



Jan 6, 1931. H. INGRAM RECEPTACLE CLOSURE CAP Filed March 29, 1928 54%)/ /A/a/PAM TTORNEY INVENTOR Patented Jan. 6, 1931 UNITED, ,SflA'rlsv 'HARRY INGRAM, or BROOKLYN, NEW-Yom:

' BEcErTAcLE-CLOSURE CAP Appncation mea march' 29,1928. semi No. 265,656.

My invention relates to closures for *botV` tles, jars, tumble'rs,for otherfcontainers. It has among other objects to provide a closure v vcap and also a gasketassociated therewith 5 in which the cap is formed at its top peripheral edge with a recess to receivethe upperV edge of the gasket and the latter formed with an upwardly inclined external faceor surface .providing a tapering portion adapted 1G lto itin the recess at'the peripheral edge of the capso that when the cap isfin its depressed orclosing position the reduced or tapered upper edge of the gasket will be seated in the recess of the cap Vwith sealing l5 effect andthe top proper of the cap will seat or rest upon the top edgeor rim of the container whereby a more effective seal is provided between the cap and the container. The preferred details; 'of formation of 20 the cap and of the gasket will be hereinafter fully described and advantages gained set forth, referencevbeing had to the'accompanying drawing forming a part-,hereof and p wherein is illustrated the preferred embodi- 2) ment ofthe invention, and in which' 'Y Figure l is a side elevation, partly in section, of Aa containerA or tumbler, showing theV c-ap andV gasket as they appear in the inal stage of closure," v

Figure 2 is a sideelevation of the closure cap,fin one form thereof;

Figure 3 isl a :vertical section, enlarged scale, through the closure-cap and .thel gasket, showing the relation ofthe two prior 35 to being applied to the container;V Y

Figure 4 is a vertical'section, enlarged scale,.through-the upper portion of a con* tainer, and the cap and gasket, when the cap and gasket are in final closing position;

Figure` 5 is aside elevation `of vthe upper portion of a container orre'cepta'cle, showing the cap withy one form of unsealing tab appliedlto the skirt of the cap;v

Figure is a similarview 'showing another form of unsealing tab; n Figurev 7 is a vertical section through a modified form of Capand gasket.

In the drawing, the yimproved cap is designated generally `by the referenceletter A. This improved cap is formed with a depressed plane or top surfaceil extending to jwithin a relatively short distanceV of Y its 4outer peripheral edge at which pointit is slightly raised yabove the Vplane of the fiat depressed portion as indicated at 3, and'th'en extended outwardly and downwardly, as indicated at 4, preferably at a 45.degree angle, more or less, which4 anglemay be varied, so as to lforni a recess 5, preferably of substantiallyinverted Vsshaped formation as illustrated. AThe skirt portion 6'of the cap eX- `tends downwardly .fromthe portion 4 and at its lower portion is deectedor inclined inwardly and downwardly as indicated at 7,

where it merges into the lowermost depending portion 8 as shown.

Y f With the cap there is used a gasketB, of rubber or other suitable elastic substance. This gasket isformed at its upperportion with an inclined face 9, extending downwardly and outwardly, givingan external bevel tothe upper part of the gasket so that the bevel face will fitagainst the inclined portion of the cap, and forming aprelatively thin or reduced terminall 10 to therupper end of the'gasket adapted to fit in the recess 5 of the cap as illustrated in Figure 3 of the drawing. The lower end of the gasket is preferably formed with a beveled or inclined face or edge 11 asshown in the same ligure, which illustrates the position of the gasket jin the cap previous, to the'cap being applied to the container or receptacle and pressed to its closing position, the edge of the lower beveled portion of the gasket restingupon the seat or inclined portion 7 of-thecap'skirt and the terminal of the upper beveled-portion of the gasketfitting in the peripherally formed recess 5 ure'3. 1

The inner vdiameter of the annular gasketl is somewhat less thanlthe outer diameter of ofthe cap as shown -inkFigkthe neck or mouth of .the'container or recepthe `space between the inclines 4 and `7y ofthe cap and deformed, as illustrated in Figs. l and 4 of theidrawing, so kas to make a close between the cap and gasket, or the gasket and or tight seal between the wall of the container or receptacle and gasket. It sometimes happens that some foreign substances get in wall of the receptacle, and prevent an effective seal. Again, imperfections occur in the side walls of the container or receptacleat.

or near the rim, or other part of the container, which also interferes with the sealing.V By forming the upper end of they gasket beveled or tapered as described`,`these iinperfeo-v 1L tions are takencare of so as not to interfere with making an effective seal. With' the'fca-p and gasket formed as described, when the tacle, :contact is first made between the lower `of the container -or receptacle which slightly pered portion of the ,gasket in the groove Y :distonts -the gasket at that stage astlie lipo'f Ithe `container orfglass enters the gasket, and at the same time the pressure eifecting such distortion `forces the relatively reduced` vor thin portion of the upper bevel or taper of the gas-ketinto --the `groove at the periphery Aof V the cap, resultiiigin an effective seal :at'such point, and at the Sametime holding the `taf .and preventing .it from curling ,pover the top of the lip :or rim of fthe container or :receptacle fbetween `the lip and flat top portion of the cap, and thus insuring the top flat portion fof the-cap resting directly upon the rim of the container or receptacle with the reduced end of the gasket filling the V shaped recess in the cap and excluded from'fbetween the fiat top `of `the cap and its seat onfthe lip or rimof the receptacle. i e y t Furthermore, it is to benoted that with the gasket formedjwith the taper tomake a relatively thin orv reduced edge atfthe ytop of the gasket, the Y relatively thin or reduced .edge ofthe gasket accommodates itself more readily Ato inequalities that may; exist inY the cap than woulda materially wider top surface to `the gasket and hence a more easily j lina-de and `more effective seal obtained.,'and

with less pressure required for* forcing the Ycap to its `closing position.v The relatively reduced or thin edge thus given to the gasket also results lin less back 'pressure `bythegasket 'onthecapithan would be `ezrerted by'a matje- .rially wider gasket bearingl against lthe reap, with .less danger `from back pressure releas- .fi-ng'thelseal.l Again,it will beob'fservedthat of the capf willY force the; gasketY voutwaimllf yl intofthespace `cir-cavity between said inclined portions which exert pressure in opposing divdirections on Jche gasket so 'as tofmake closer :contact between the gasket and wall of the container or receptacle and `thus :makea tighterlsealq f v Y The foregoing statement of reasons for forming the cap and also the gasket with the novel features specified make apparent, advantages resulting from the invention made.

A modified formrof the invention is given in Figure 7 of the drawing, wherein A represents the cap having a depressed flat top sur- 'facela', formed at its peripheral edge with ma slightly raised portion 3a which with the skirt portion 6a formsy a substantially invertedy V-shapedfgroove 5a lying outside of the flat top of the cap which will seat on the j:l-ip- "or Aof the receptacle, the tapering e VYgroove being adapted to receive the relativecap is forced down on the container or rece'p` ly'ft'h'in 'or reduced' terminal 10a of the bev- ;eled or taperedv face vof the Vgasket B', lthe skirt 6a fof the .cap having the .downwardly and inwardly inclined portion or shelf 7a upon which will bear the lower end of the .beveled portionvlplaof the gasket, the ygasket ybeing forced into the space or cavity of the skirt between the inclined portions 8a and 7 a of thecapjron forcing down the'icap so as to deform the gasket and effect a seal between it and the container'eto Whic"l1 the cap vand gasket are applied. Y l

TvVhilethe form ofthe inventionillustrated in Figures lkto 4 iis preferred .the modified form illustrated in Figure 7 Vcan be used to ebtain some of the `.advantages set forth for the ypreferred form.

The cap illustrated in liigureY 5 `shows a. Y

tab 1lv with an aperture l2 to receive a tool for engagingthe tab to pull on it so as .to tear or fracture the skirt for .breaking the seal in removing the cap; and in Figure 6 the nu- `meral 173 indicates anotherform `oftab for Vbreaking the seal and removing lthe cap, but such special features .are not claimed herein.

Illustrationl of the preferred details of construction have .been given and described, but changes therein can beinade without vdeparting fromlftheI- invention as sought to be defined by the annexed claims.v l

f-The cap 'willbe formedof relatively thin or flexible metal, suchas aluminum, lor other thin and ieXiblemeta-lfor other suitable material.V e n Y Having described-:fthe invention :and set forthv its ineritswhat I olaim'isel; A receptacle'closure comprising .a cap having `a depending skirt "formedV at its lower portion -w-itha downwardly and inwardly inclinedlpa-rt to; form aninclined seat'for an Vouter edge "of agas'ket'i'having a 'lower "beveled face' and Vformed between its upper portion andthe top'proper ofthe cap with an inclined part to form an inclined seat Vfory an upper beveled face of the gasket, saidupper and lower .inclined seats serving tov distort seat-uponthe Klipior rimofthecontainer with the gasket excluded from between the cap and its seat.

2. A receptacle closure comprising a cap V vhaving a depending skirt formed at its lower portion with a downwardly inclinedpart to form an inclined seat, and at its upper portion, between it and the top properv of the cap, with an inclined part to form an inclined seat, the cap being also'ormed with a peripherally disposed raised portion having on lits inner face an annular recess with an f inclined wall; and a resilient wedge-shaped gasket having beveled upper and lower ends and disposed to have its upper beveled face bear against the'upper inclined seat of the cap and the terminal of the upper beveled end lit in said annular recess, the inclined upper and lower seats serving to distort the gasket into sealing relation between the cap and container in moving the cap to sealing position, and the annular groove in the cap serving to exclude the gasket from between the cap and its seat and permit the under face of the cap to seat upon the lip or rim of the container, the annular groove in the cap being retained when the cap is in sealing position. i

8. A receptacle closure cap having a depending skirt and formed with a periph- Y erally disposed annular raised portion formed on its under :tace with an annular tapering recess, the upper portion of the cap having an inclined portion below said recess,`and a resilient gasket having an inclined facek at its upper end bearing against said inclined portion of the cap and formed with a tapering upper edge fitting in the tapering recess oi the cap, said recess upon compression of the gasket in forcing the capinto closing i position Vserving to guide the `compressed gasket into the recess and prevent its-spreading between the under face of the cap and portion of the receptacle upon which the cap seats and effecting a'seal at such point.

clined off-set portion, and a resilient gasket having an external bevelednupper edge to fit inthe recess of the cap and a lower inner' closing position `and eii'ect a seal between the gasket and recessed .portion of the cap and also between the gasket and adjacent wall of the receptacle. v

' In testimony whereof I aliix my signature.

HARRY INGRAM.

4. A receptacle closure cap Ahaving a de- Y. l

pending skirt and 'formed with a. peripherally disposed annular raised portion ormedon its under tace with an annular recess having an inclined wall, the skirtof the cap at l a lower plane than said 'wall having an inwardly and downwardly inclined off-set pors tion, and a resilient gasket having the edge of its uppervr end an inclined faceV bearing against the inclined wall of the recesstand -at its lower end bearing against the inclined oil-set portion of the skirt, the gasket adapt- Y ed to be compressed between said inclined wall and oif-setportion upon forcing the capinto closing positionl for effecting a lseal `between the vgasket and adjacent wall ofthe receptacle. l

5. A receptacle closure cap having a depending skirt and formed with a recess on the under face of the cap, the skirt being formed at its lower part ,withian inner n- 

